#0A133E
Closest named color: Navy Blue (#001146). oklch(21.2% 0.083 269), rgb(10, 19, 62).
Aa
White text reads best on this color (17.86:1).
About this color
#0A133E is a very dark, moderately saturated blue. In OKLCH its lightness is 21%, its chroma 0.083 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Navy Blue (#001146), ΔE 0.022 away. White text reads best on it, at 17.86:1.
| Hue family | Blues |
| Lightness | very dark (21%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Navy Blue (#001146) |
| Black text | 1.17:1 |
| White text | 17.86:1 |
Values
| HEX | #0A133E |
| RGB | rgb(10, 19, 62) |
| HSL | hsl(230, 72%, 14%) |
| OKLCH | oklch(21.2% 0.083 269) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #0A133E | 17.86:1 | AAA | Lc -106.6 | Preferred for body text |
| Black text on #0A133E | 1.17:1 | Fails | Lc 0.0 | Not readable |
| #0A133E text on white | 17.86:1 | AAA | Lc 104.4 | Preferred for body text |
| #0A133E text on black | 1.17:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#CAD8FE
oklch(88.4% 0.055 269.3)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5A7CFF
oklch(63% 0.198 269.1)
-
Step 600
600
#4260F0
oklch(55.5% 0.218 269)
-
Step 700
700
#354ED1
oklch(49% 0.203 269)
-
Step 800
800
#2C41A9
oklch(42.7% 0.168 269.2)
-
Step 900
900
#263986
oklch(37.7% 0.131 268.8)
-
Step 950
950 (this color)
#0A133E
oklch(21.2% 0.083 269)
#0A133E with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #001A3F | 0.022 |
| Deuteranopia (no green cones) | #00153D | 0.014 |
| Tritanopia (no blue cones) | #001E26 | 0.066 |
| Achromatopsia (no color) | #171717 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0A133E
#0A133E
oklch(21.2% 0.083 269)
- #211700
#211700
oklch(21.1% 0.043 87.4)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #0A133E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Navy Blue #001146 ΔE 0.022
- Night Blue #040348 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.051
- Dark Navy #000435 ΔE 0.054
- Dark Indigo #1F0954 ΔE 0.056
- Very Dark Blue #000133 ΔE 0.066
- Dark Navy Blue #00022E ΔE 0.070
- Midnight #03012D ΔE 0.070
Use #0A133E in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.